/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-92.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 14:14:15,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 14:14:15,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 14:14:15,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 14:14:15,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 14:14:15,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 14:14:15,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 14:14:15,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 14:14:15,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 14:14:15,790 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 14:14:15,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 14:14:15,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 14:14:15,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 14:14:15,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 14:14:15,792 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 14:14:15,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 14:14:15,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 14:14:15,793 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 14:14:15,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 14:14:15,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 14:14:15,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 14:14:15,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 14:14:15,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 14:14:15,796 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 14:14:15,796 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 14:14:15,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 14:14:15,796 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 14:14:15,797 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 14:14:15,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 14:14:15,797 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 14:14:15,798 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 14:14:15,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 14:14:15,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 14:14:15,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 14:14:15,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:14:15,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 14:14:15,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 14:14:15,799 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 14:14:15,799 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 14:14:15,799 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 14:14:15,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 14:14:15,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 14:14:15,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 14:14:15,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 14:14:15,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 14:14:15,805 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 14:14:15,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 14:14:16,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 14:14:16,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 14:14:16,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 14:14:16,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 14:14:16,040 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 14:14:16,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-92.i [2023-12-24 14:14:17,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 14:14:17,315 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 14:14:17,316 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-92.i [2023-12-24 14:14:17,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b75de36/dacc9e1651b44c29b1679cc95fcb84bc/FLAGf30912eff [2023-12-24 14:14:17,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b75de36/dacc9e1651b44c29b1679cc95fcb84bc [2023-12-24 14:14:17,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 14:14:17,344 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 14:14:17,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 14:14:17,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 14:14:17,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 14:14:17,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b18dc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17, skipping insertion in model container [2023-12-24 14:14:17,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 14:14:17,519 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-92.i[916,929] [2023-12-24 14:14:17,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:14:17,581 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 14:14:17,598 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-92.i[916,929] [2023-12-24 14:14:17,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 14:14:17,660 INFO L206 MainTranslator]: Completed translation [2023-12-24 14:14:17,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17 WrapperNode [2023-12-24 14:14:17,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 14:14:17,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 14:14:17,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 14:14:17,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 14:14:17,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,724 INFO L138 Inliner]: procedures = 36, calls = 159, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 435 [2023-12-24 14:14:17,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 14:14:17,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 14:14:17,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 14:14:17,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 14:14:17,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,761 INFO L175 MemorySlicer]: Split 123 memory accesses to 7 slices as follows [2, 21, 23, 3, 61, 3, 10]. 50 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 3, 3, 1, 6, 1, 2]. The 18 writes are split as follows [0, 4, 4, 1, 6, 1, 2]. [2023-12-24 14:14:17,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 14:14:17,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 14:14:17,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 14:14:17,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 14:14:17,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (1/1) ... [2023-12-24 14:14:17,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 14:14:17,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 14:14:17,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 14:14:17,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 14:14:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 14:14:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2023-12-24 14:14:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2023-12-24 14:14:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2023-12-24 14:14:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2023-12-24 14:14:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2023-12-24 14:14:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#5 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#6 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#5 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#6 [2023-12-24 14:14:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 14:14:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 14:14:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-12-24 14:14:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-12-24 14:14:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-12-24 14:14:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-12-24 14:14:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-12-24 14:14:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 14:14:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 14:14:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2023-12-24 14:14:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2023-12-24 14:14:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2023-12-24 14:14:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2023-12-24 14:14:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#6 [2023-12-24 14:14:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 14:14:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 14:14:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-24 14:14:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-24 14:14:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-12-24 14:14:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-12-24 14:14:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-12-24 14:14:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 14:14:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 14:14:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#5 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#6 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#0 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#1 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#2 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#3 [2023-12-24 14:14:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#4 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#5 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8#6 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#2 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#3 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#4 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#5 [2023-12-24 14:14:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#6 [2023-12-24 14:14:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 14:14:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 14:14:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-12-24 14:14:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-12-24 14:14:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-12-24 14:14:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#5 [2023-12-24 14:14:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#6 [2023-12-24 14:14:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 14:14:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 14:14:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2023-12-24 14:14:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2023-12-24 14:14:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2023-12-24 14:14:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#5 [2023-12-24 14:14:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#6 [2023-12-24 14:14:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 14:14:17,879 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 14:14:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 14:14:17,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 14:14:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 14:14:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 14:14:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-12-24 14:14:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-12-24 14:14:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-12-24 14:14:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-12-24 14:14:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-12-24 14:14:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 14:14:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 14:14:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#2 [2023-12-24 14:14:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#3 [2023-12-24 14:14:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#4 [2023-12-24 14:14:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#5 [2023-12-24 14:14:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#6 [2023-12-24 14:14:18,098 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 14:14:18,100 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 14:14:18,821 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 14:14:18,869 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 14:14:18,869 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 14:14:18,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:14:18 BoogieIcfgContainer [2023-12-24 14:14:18,870 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 14:14:18,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 14:14:18,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 14:14:18,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 14:14:18,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 02:14:17" (1/3) ... [2023-12-24 14:14:18,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae07c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:14:18, skipping insertion in model container [2023-12-24 14:14:18,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 02:14:17" (2/3) ... [2023-12-24 14:14:18,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bae07c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 02:14:18, skipping insertion in model container [2023-12-24 14:14:18,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 02:14:18" (3/3) ... [2023-12-24 14:14:18,878 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-92.i [2023-12-24 14:14:18,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 14:14:18,892 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 14:14:18,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 14:14:18,933 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6143dad2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 14:14:18,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 14:14:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 76 states have (on average 1.394736842105263) internal successors, (106), 77 states have internal predecessors, (106), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:14:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 14:14:18,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:14:18,956 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:14:18,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:14:18,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:14:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1111023281, now seen corresponding path program 1 times [2023-12-24 14:14:18,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:14:18,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261510201] [2023-12-24 14:14:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:18,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:18,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:14:18,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:14:18,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 14:14:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:19,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 14:14:19,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 14:14:19,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:14:19,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:14:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261510201] [2023-12-24 14:14:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261510201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:14:19,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:14:19,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 14:14:19,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028418015] [2023-12-24 14:14:19,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:14:19,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 14:14:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:14:19,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 14:14:19,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:14:19,496 INFO L87 Difference]: Start difference. First operand has 98 states, 76 states have (on average 1.394736842105263) internal successors, (106), 77 states have internal predecessors, (106), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:14:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:14:19,559 INFO L93 Difference]: Finished difference Result 193 states and 305 transitions. [2023-12-24 14:14:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 14:14:19,562 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 146 [2023-12-24 14:14:19,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:14:19,568 INFO L225 Difference]: With dead ends: 193 [2023-12-24 14:14:19,568 INFO L226 Difference]: Without dead ends: 96 [2023-12-24 14:14:19,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 14:14:19,574 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:14:19,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 14:14:19,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-24 14:14:19,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-24 14:14:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:14:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 139 transitions. [2023-12-24 14:14:19,619 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 139 transitions. Word has length 146 [2023-12-24 14:14:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:14:19,619 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 139 transitions. [2023-12-24 14:14:19,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:14:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 139 transitions. [2023-12-24 14:14:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 14:14:19,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:14:19,623 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:14:19,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 14:14:19,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:19,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:14:19,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:14:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash 23756047, now seen corresponding path program 1 times [2023-12-24 14:14:19,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:14:19,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105937115] [2023-12-24 14:14:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:19,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:19,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:14:19,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:14:19,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 14:14:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:20,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 14:14:20,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:20,334 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:14:20,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:14:20,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:14:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105937115] [2023-12-24 14:14:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105937115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:14:20,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:14:20,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:14:20,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407315935] [2023-12-24 14:14:20,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:14:20,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:14:20,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:14:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:14:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:14:20,338 INFO L87 Difference]: Start difference. First operand 96 states and 139 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:14:20,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:14:20,636 INFO L93 Difference]: Finished difference Result 216 states and 312 transitions. [2023-12-24 14:14:20,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 14:14:20,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2023-12-24 14:14:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:14:20,639 INFO L225 Difference]: With dead ends: 216 [2023-12-24 14:14:20,639 INFO L226 Difference]: Without dead ends: 121 [2023-12-24 14:14:20,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:14:20,641 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 44 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:14:20,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 750 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:14:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-24 14:14:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 104. [2023-12-24 14:14:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 83 states have internal predecessors, (109), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:14:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2023-12-24 14:14:20,653 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 147 transitions. Word has length 146 [2023-12-24 14:14:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:14:20,654 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 147 transitions. [2023-12-24 14:14:20,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:14:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 147 transitions. [2023-12-24 14:14:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 14:14:20,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:14:20,657 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:14:20,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 14:14:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:20,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:14:20,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:14:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 23815629, now seen corresponding path program 1 times [2023-12-24 14:14:20,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:14:20,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365846581] [2023-12-24 14:14:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:20,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:20,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:14:20,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:14:20,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 14:14:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:21,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 14:14:21,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:21,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:14:21,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 14:14:21,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-24 14:14:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 270 proven. 12 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-12-24 14:14:21,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:14:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 42 proven. 12 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 14:14:21,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:14:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365846581] [2023-12-24 14:14:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365846581] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:14:21,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:14:21,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-24 14:14:21,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925255351] [2023-12-24 14:14:21,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:14:21,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 14:14:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:14:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 14:14:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:14:21,934 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 14:14:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:14:22,989 INFO L93 Difference]: Finished difference Result 213 states and 298 transitions. [2023-12-24 14:14:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:14:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) Word has length 146 [2023-12-24 14:14:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:14:22,992 INFO L225 Difference]: With dead ends: 213 [2023-12-24 14:14:22,992 INFO L226 Difference]: Without dead ends: 110 [2023-12-24 14:14:22,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-12-24 14:14:22,994 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 270 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 14:14:22,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 368 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 14:14:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-24 14:14:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-12-24 14:14:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 86 states have internal predecessors, (111), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:14:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 149 transitions. [2023-12-24 14:14:23,008 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 149 transitions. Word has length 146 [2023-12-24 14:14:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:14:23,009 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 149 transitions. [2023-12-24 14:14:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.333333333333333) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 14:14:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 149 transitions. [2023-12-24 14:14:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 14:14:23,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:14:23,011 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:14:23,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-24 14:14:23,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:23,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:14:23,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:14:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash -793832821, now seen corresponding path program 1 times [2023-12-24 14:14:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:14:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176190937] [2023-12-24 14:14:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:23,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:23,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:14:23,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:14:23,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-24 14:14:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:23,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 14:14:23,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:23,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:14:23,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:14:23,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:23,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-12-24 14:14:24,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:24,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-12-24 14:14:24,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:24,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2023-12-24 14:14:25,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:25,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 65 [2023-12-24 14:14:25,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:25,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 37 [2023-12-24 14:14:25,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-24 14:14:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 545 proven. 33 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-24 14:14:25,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:14:27,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-24 14:14:27,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:14:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176190937] [2023-12-24 14:14:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176190937] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:14:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [473580068] [2023-12-24 14:14:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:27,948 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:14:27,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:14:27,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:14:27,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-24 14:14:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:28,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 14:14:28,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:29,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-24 14:14:29,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:29,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-12-24 14:14:29,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:29,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 36 [2023-12-24 14:14:30,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:30,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 43 [2023-12-24 14:14:30,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:30,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2023-12-24 14:14:31,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:31,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 57 [2023-12-24 14:14:31,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-24 14:14:31,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:31,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 31 [2023-12-24 14:14:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 209 proven. 369 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-24 14:14:32,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:14:32,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-12-24 14:14:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [473580068] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:14:32,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:14:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-12-24 14:14:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539709512] [2023-12-24 14:14:32,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:14:32,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 14:14:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:14:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 14:14:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 14:14:32,822 INFO L87 Difference]: Start difference. First operand 108 states and 149 transitions. Second operand has 28 states, 24 states have (on average 5.5) internal successors, (132), 28 states have internal predecessors, (132), 16 states have call successors, (38), 12 states have call predecessors, (38), 16 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-24 14:14:38,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:14:38,751 INFO L93 Difference]: Finished difference Result 407 states and 529 transitions. [2023-12-24 14:14:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-24 14:14:38,752 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 5.5) internal successors, (132), 28 states have internal predecessors, (132), 16 states have call successors, (38), 12 states have call predecessors, (38), 16 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) Word has length 146 [2023-12-24 14:14:38,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:14:38,755 INFO L225 Difference]: With dead ends: 407 [2023-12-24 14:14:38,755 INFO L226 Difference]: Without dead ends: 300 [2023-12-24 14:14:38,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 321 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1019, Invalid=3811, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 14:14:38,757 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 914 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:14:38,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1018 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 14:14:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-24 14:14:38,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 132. [2023-12-24 14:14:38,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 104 states have internal predecessors, (128), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:14:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 166 transitions. [2023-12-24 14:14:38,781 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 166 transitions. Word has length 146 [2023-12-24 14:14:38,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:14:38,782 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 166 transitions. [2023-12-24 14:14:38,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 5.5) internal successors, (132), 28 states have internal predecessors, (132), 16 states have call successors, (38), 12 states have call predecessors, (38), 16 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2023-12-24 14:14:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 166 transitions. [2023-12-24 14:14:38,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 14:14:38,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:14:38,784 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:14:38,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-24 14:14:39,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2023-12-24 14:14:39,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:14:39,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:14:39,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:14:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2138648197, now seen corresponding path program 1 times [2023-12-24 14:14:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:14:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046856426] [2023-12-24 14:14:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:39,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:39,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:14:39,201 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:14:39,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 14:14:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:39,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-24 14:14:39,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:39,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2023-12-24 14:14:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 204 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 14:14:39,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:14:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 14:14:40,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:14:40,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046856426] [2023-12-24 14:14:40,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046856426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:14:40,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:14:40,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-24 14:14:40,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251593009] [2023-12-24 14:14:40,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:14:40,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:14:40,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:14:40,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:14:40,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:14:40,059 INFO L87 Difference]: Start difference. First operand 132 states and 166 transitions. Second operand has 10 states, 8 states have (on average 8.25) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:14:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:14:40,579 INFO L93 Difference]: Finished difference Result 273 states and 340 transitions. [2023-12-24 14:14:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:14:40,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.25) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) Word has length 148 [2023-12-24 14:14:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:14:40,581 INFO L225 Difference]: With dead ends: 273 [2023-12-24 14:14:40,581 INFO L226 Difference]: Without dead ends: 142 [2023-12-24 14:14:40,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:14:40,582 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 135 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:14:40,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 446 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:14:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-24 14:14:40,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2023-12-24 14:14:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 107 states have internal predecessors, (130), 19 states have call successors, (19), 9 states have call predecessors, (19), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:14:40,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 168 transitions. [2023-12-24 14:14:40,605 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 168 transitions. Word has length 148 [2023-12-24 14:14:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:14:40,605 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 168 transitions. [2023-12-24 14:14:40,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.25) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:14:40,605 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 168 transitions. [2023-12-24 14:14:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 14:14:40,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:14:40,607 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:14:40,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-24 14:14:40,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:40,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:14:40,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:14:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash 449704455, now seen corresponding path program 1 times [2023-12-24 14:14:40,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:14:40,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112007340] [2023-12-24 14:14:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:40,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:40,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:14:40,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:14:40,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-24 14:14:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:41,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:14:41,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:41,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:14:41,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:41,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2023-12-24 14:14:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 204 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 14:14:41,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:14:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 14:14:41,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:14:41,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112007340] [2023-12-24 14:14:41,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112007340] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:14:41,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:14:41,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-24 14:14:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507957879] [2023-12-24 14:14:41,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:14:41,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 14:14:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:14:41,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 14:14:41,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:14:41,716 INFO L87 Difference]: Start difference. First operand 136 states and 168 transitions. Second operand has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:14:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:14:42,314 INFO L93 Difference]: Finished difference Result 281 states and 344 transitions. [2023-12-24 14:14:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 14:14:42,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) Word has length 148 [2023-12-24 14:14:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:14:42,316 INFO L225 Difference]: With dead ends: 281 [2023-12-24 14:14:42,316 INFO L226 Difference]: Without dead ends: 146 [2023-12-24 14:14:42,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2023-12-24 14:14:42,317 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 148 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:14:42,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 570 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:14:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-24 14:14:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2023-12-24 14:14:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 110 states have (on average 1.2) internal successors, (132), 110 states have internal predecessors, (132), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:14:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 170 transitions. [2023-12-24 14:14:42,337 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 170 transitions. Word has length 148 [2023-12-24 14:14:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:14:42,338 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 170 transitions. [2023-12-24 14:14:42,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.833333333333333) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:14:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 170 transitions. [2023-12-24 14:14:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 14:14:42,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:14:42,340 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:14:42,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 14:14:42,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:42,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:14:42,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:14:42,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1211523156, now seen corresponding path program 1 times [2023-12-24 14:14:42,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:14:42,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635144300] [2023-12-24 14:14:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:42,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:14:42,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:14:42,552 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:14:42,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 14:14:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:43,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-24 14:14:43,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:43,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:14:43,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 14:14:43,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 55 [2023-12-24 14:14:44,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 59 [2023-12-24 14:14:45,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:14:45,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 77 [2023-12-24 14:14:47,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 91 [2023-12-24 14:14:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 464 proven. 120 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-24 14:14:48,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:14:55,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:14:55,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635144300] [2023-12-24 14:14:55,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635144300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:14:55,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [288349982] [2023-12-24 14:14:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:14:55,337 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:14:55,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:14:55,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:14:55,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-24 14:14:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:14:56,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 14:14:56,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:14:56,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:14:58,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2023-12-24 14:15:00,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:15:00,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 45 [2023-12-24 14:15:00,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:15:00,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 42 [2023-12-24 14:15:00,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:15:00,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 14:15:01,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 14:15:05,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:15:05,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 50 [2023-12-24 14:15:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 176 proven. 360 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 14:15:07,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:15:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [288349982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:15:12,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:15:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 27] total 63 [2023-12-24 14:15:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167396774] [2023-12-24 14:15:12,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:15:12,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-24 14:15:12,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:15:12,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-24 14:15:12,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1087, Invalid=5719, Unknown=0, NotChecked=0, Total=6806 [2023-12-24 14:15:12,744 INFO L87 Difference]: Start difference. First operand 140 states and 170 transitions. Second operand has 63 states, 52 states have (on average 2.8461538461538463) internal successors, (148), 48 states have internal predecessors, (148), 17 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2023-12-24 14:15:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:15:53,112 INFO L93 Difference]: Finished difference Result 832 states and 1014 transitions. [2023-12-24 14:15:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-24 14:15:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 52 states have (on average 2.8461538461538463) internal successors, (148), 48 states have internal predecessors, (148), 17 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) Word has length 150 [2023-12-24 14:15:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:15:53,116 INFO L225 Difference]: With dead ends: 832 [2023-12-24 14:15:53,116 INFO L226 Difference]: Without dead ends: 693 [2023-12-24 14:15:53,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8008 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=3845, Invalid=20961, Unknown=0, NotChecked=0, Total=24806 [2023-12-24 14:15:53,123 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 2158 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:15:53,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 3384 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2749 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2023-12-24 14:15:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-24 14:15:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 306. [2023-12-24 14:15:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 241 states have (on average 1.1825726141078838) internal successors, (285), 241 states have internal predecessors, (285), 38 states have call successors, (38), 26 states have call predecessors, (38), 26 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 14:15:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 361 transitions. [2023-12-24 14:15:53,191 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 361 transitions. Word has length 150 [2023-12-24 14:15:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:15:53,192 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 361 transitions. [2023-12-24 14:15:53,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 52 states have (on average 2.8461538461538463) internal successors, (148), 48 states have internal predecessors, (148), 17 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2023-12-24 14:15:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 361 transitions. [2023-12-24 14:15:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 14:15:53,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:15:53,195 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:15:53,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 14:15:53,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-24 14:15:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:15:53,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:15:53,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:15:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1149483542, now seen corresponding path program 1 times [2023-12-24 14:15:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:15:53,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087930315] [2023-12-24 14:15:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:15:53,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:15:53,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:15:53,610 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:15:53,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 14:15:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:15:54,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-24 14:15:54,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:15:54,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:15:54,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-24 14:15:54,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 31 [2023-12-24 14:15:54,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2023-12-24 14:15:55,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2023-12-24 14:15:57,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:15:57,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 128 treesize of output 103 [2023-12-24 14:15:58,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:15:58,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 165 treesize of output 73 [2023-12-24 14:15:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 528 proven. 81 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-24 14:15:59,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:16:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:16:00,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:16:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087930315] [2023-12-24 14:16:00,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087930315] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:16:00,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:16:00,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [38] total 43 [2023-12-24 14:16:00,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985603778] [2023-12-24 14:16:00,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:16:00,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 14:16:00,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:16:00,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 14:16:00,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=1510, Unknown=0, NotChecked=0, Total=1806 [2023-12-24 14:16:00,468 INFO L87 Difference]: Start difference. First operand 306 states and 361 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:16:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:16:01,744 INFO L93 Difference]: Finished difference Result 667 states and 813 transitions. [2023-12-24 14:16:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 14:16:01,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-24 14:16:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:16:01,748 INFO L225 Difference]: With dead ends: 667 [2023-12-24 14:16:01,748 INFO L226 Difference]: Without dead ends: 514 [2023-12-24 14:16:01,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=339, Invalid=2111, Unknown=0, NotChecked=0, Total=2450 [2023-12-24 14:16:01,750 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 310 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:16:01,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 713 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 14:16:01,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-12-24 14:16:01,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 320. [2023-12-24 14:16:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 255 states have (on average 1.1803921568627451) internal successors, (301), 255 states have internal predecessors, (301), 38 states have call successors, (38), 26 states have call predecessors, (38), 26 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 14:16:01,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 377 transitions. [2023-12-24 14:16:01,799 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 377 transitions. Word has length 150 [2023-12-24 14:16:01,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:16:01,799 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 377 transitions. [2023-12-24 14:16:01,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:16:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 377 transitions. [2023-12-24 14:16:01,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 14:16:01,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:16:01,801 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:16:01,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 14:16:02,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:16:02,017 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:16:02,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:16:02,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2134366504, now seen corresponding path program 1 times [2023-12-24 14:16:02,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:16:02,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333436368] [2023-12-24 14:16:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:16:02,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:16:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:16:02,018 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:16:02,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 14:16:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:16:02,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 14:16:02,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:16:02,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:16:02,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-12-24 14:16:03,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 45 [2023-12-24 14:16:03,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:03,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 73 [2023-12-24 14:16:04,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:04,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 86 [2023-12-24 14:16:05,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:05,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 97 treesize of output 77 [2023-12-24 14:16:06,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:06,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 46 [2023-12-24 14:16:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 460 proven. 120 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-24 14:16:06,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:16:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:16:06,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:16:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333436368] [2023-12-24 14:16:06,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333436368] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:16:06,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:16:06,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [28] total 31 [2023-12-24 14:16:06,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315468959] [2023-12-24 14:16:06,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:16:06,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:16:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:16:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:16:06,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2023-12-24 14:16:06,959 INFO L87 Difference]: Start difference. First operand 320 states and 377 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:16:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:16:07,278 INFO L93 Difference]: Finished difference Result 615 states and 742 transitions. [2023-12-24 14:16:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:16:07,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-24 14:16:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:16:07,281 INFO L225 Difference]: With dead ends: 615 [2023-12-24 14:16:07,281 INFO L226 Difference]: Without dead ends: 448 [2023-12-24 14:16:07,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2023-12-24 14:16:07,282 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 201 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:16:07,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 460 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:16:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-24 14:16:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 320. [2023-12-24 14:16:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 255 states have (on average 1.1764705882352942) internal successors, (300), 255 states have internal predecessors, (300), 38 states have call successors, (38), 26 states have call predecessors, (38), 26 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 14:16:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 376 transitions. [2023-12-24 14:16:07,333 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 376 transitions. Word has length 150 [2023-12-24 14:16:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:16:07,333 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 376 transitions. [2023-12-24 14:16:07,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:16:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 376 transitions. [2023-12-24 14:16:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 14:16:07,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:16:07,335 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:16:07,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 14:16:07,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:16:07,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:16:07,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:16:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1562853800, now seen corresponding path program 1 times [2023-12-24 14:16:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:16:07,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010731425] [2023-12-24 14:16:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:16:07,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:16:07,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:16:07,542 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:16:07,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 14:16:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:16:08,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-24 14:16:08,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:16:08,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:16:08,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2023-12-24 14:16:08,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:08,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2023-12-24 14:16:08,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 60 [2023-12-24 14:16:09,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2023-12-24 14:16:12,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:12,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 166 treesize of output 121 [2023-12-24 14:16:13,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:13,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 184 treesize of output 84 [2023-12-24 14:16:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 506 proven. 96 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-24 14:16:13,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:16:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:16:15,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:16:15,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010731425] [2023-12-24 14:16:15,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010731425] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:16:15,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:16:15,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [45] total 52 [2023-12-24 14:16:15,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724165547] [2023-12-24 14:16:15,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:16:15,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:16:15,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:16:15,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:16:15,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 14:16:15,818 INFO L87 Difference]: Start difference. First operand 320 states and 376 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:16:18,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:16:18,235 INFO L93 Difference]: Finished difference Result 909 states and 1102 transitions. [2023-12-24 14:16:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 14:16:18,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-24 14:16:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:16:18,239 INFO L225 Difference]: With dead ends: 909 [2023-12-24 14:16:18,239 INFO L226 Difference]: Without dead ends: 590 [2023-12-24 14:16:18,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=474, Invalid=2948, Unknown=0, NotChecked=0, Total=3422 [2023-12-24 14:16:18,241 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 279 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:16:18,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1687 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 14:16:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-24 14:16:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 325. [2023-12-24 14:16:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.176923076923077) internal successors, (306), 260 states have internal predecessors, (306), 38 states have call successors, (38), 26 states have call predecessors, (38), 26 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 14:16:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 382 transitions. [2023-12-24 14:16:18,304 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 382 transitions. Word has length 150 [2023-12-24 14:16:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:16:18,304 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 382 transitions. [2023-12-24 14:16:18,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:16:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 382 transitions. [2023-12-24 14:16:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 14:16:18,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:16:18,305 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:16:18,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 14:16:18,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:16:18,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:16:18,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:16:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash 985623148, now seen corresponding path program 1 times [2023-12-24 14:16:18,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:16:18,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845541462] [2023-12-24 14:16:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:16:18,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:16:18,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:16:18,519 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:16:18,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 14:16:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:16:19,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 14:16:19,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:16:19,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:16:19,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-12-24 14:16:19,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-12-24 14:16:19,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2023-12-24 14:16:20,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:20,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 63 [2023-12-24 14:16:21,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 63 [2023-12-24 14:16:25,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:25,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 58 [2023-12-24 14:16:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 489 proven. 93 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-24 14:16:26,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:16:31,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:16:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845541462] [2023-12-24 14:16:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845541462] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:16:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1156689571] [2023-12-24 14:16:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:16:31,803 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:16:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:16:31,804 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:16:31,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-24 14:16:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:16:32,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 14:16:32,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:16:33,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:16:34,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-12-24 14:16:35,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:35,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 40 [2023-12-24 14:16:35,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:35,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 47 [2023-12-24 14:16:36,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:36,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 14:16:36,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 14:16:41,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:16:41,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 51 [2023-12-24 14:16:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 167 proven. 369 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-24 14:16:42,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:16:44,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1156689571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:16:44,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:16:44,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 19] total 47 [2023-12-24 14:16:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154049656] [2023-12-24 14:16:44,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:16:44,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-24 14:16:44,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:16:44,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-24 14:16:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=694, Invalid=3088, Unknown=0, NotChecked=0, Total=3782 [2023-12-24 14:16:44,056 INFO L87 Difference]: Start difference. First operand 325 states and 382 transitions. Second operand has 47 states, 40 states have (on average 3.7) internal successors, (148), 42 states have internal predecessors, (148), 17 states have call successors, (38), 15 states have call predecessors, (38), 17 states have return successors, (38), 11 states have call predecessors, (38), 17 states have call successors, (38) [2023-12-24 14:17:26,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:17:26,510 INFO L93 Difference]: Finished difference Result 1042 states and 1250 transitions. [2023-12-24 14:17:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-24 14:17:26,511 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 40 states have (on average 3.7) internal successors, (148), 42 states have internal predecessors, (148), 17 states have call successors, (38), 15 states have call predecessors, (38), 17 states have return successors, (38), 11 states have call predecessors, (38), 17 states have call successors, (38) Word has length 150 [2023-12-24 14:17:26,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:17:26,513 INFO L225 Difference]: With dead ends: 1042 [2023-12-24 14:17:26,513 INFO L226 Difference]: Without dead ends: 718 [2023-12-24 14:17:26,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 386 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5337 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=2946, Invalid=13824, Unknown=0, NotChecked=0, Total=16770 [2023-12-24 14:17:26,517 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1497 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 2417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:17:26,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 2640 Invalid, 2417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2023-12-24 14:17:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-24 14:17:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 337. [2023-12-24 14:17:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 272 states have (on average 1.1691176470588236) internal successors, (318), 272 states have internal predecessors, (318), 38 states have call successors, (38), 26 states have call predecessors, (38), 26 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 14:17:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 394 transitions. [2023-12-24 14:17:26,589 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 394 transitions. Word has length 150 [2023-12-24 14:17:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:17:26,589 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 394 transitions. [2023-12-24 14:17:26,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 40 states have (on average 3.7) internal successors, (148), 42 states have internal predecessors, (148), 17 states have call successors, (38), 15 states have call predecessors, (38), 17 states have return successors, (38), 11 states have call predecessors, (38), 17 states have call successors, (38) [2023-12-24 14:17:26,589 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 394 transitions. [2023-12-24 14:17:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 14:17:26,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:17:26,590 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:17:26,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-24 14:17:26,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 14:17:27,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:17:27,013 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:17:27,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:17:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash -25494102, now seen corresponding path program 1 times [2023-12-24 14:17:27,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:17:27,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112920789] [2023-12-24 14:17:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:17:27,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:17:27,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:17:27,015 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:17:27,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-24 14:17:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:17:27,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-24 14:17:27,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:17:27,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-24 14:17:27,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 32 [2023-12-24 14:17:28,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:28,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 45 [2023-12-24 14:17:28,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 45 [2023-12-24 14:17:29,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 82 [2023-12-24 14:17:33,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:33,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 106 [2023-12-24 14:17:35,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:35,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 171 treesize of output 81 [2023-12-24 14:17:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 510 proven. 96 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-24 14:17:35,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:17:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:17:37,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:17:37,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112920789] [2023-12-24 14:17:37,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112920789] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:17:37,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:17:37,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [45] total 52 [2023-12-24 14:17:37,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364149387] [2023-12-24 14:17:37,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:17:37,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:17:37,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:17:37,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:17:37,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=2218, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 14:17:37,786 INFO L87 Difference]: Start difference. First operand 337 states and 394 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:17:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:17:39,546 INFO L93 Difference]: Finished difference Result 926 states and 1122 transitions. [2023-12-24 14:17:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 14:17:39,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-24 14:17:39,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:17:39,549 INFO L225 Difference]: With dead ends: 926 [2023-12-24 14:17:39,550 INFO L226 Difference]: Without dead ends: 590 [2023-12-24 14:17:39,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=498, Invalid=3042, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 14:17:39,551 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 441 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:17:39,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1326 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 14:17:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-24 14:17:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 327. [2023-12-24 14:17:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 262 states have (on average 1.16793893129771) internal successors, (306), 262 states have internal predecessors, (306), 38 states have call successors, (38), 26 states have call predecessors, (38), 26 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-24 14:17:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 382 transitions. [2023-12-24 14:17:39,641 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 382 transitions. Word has length 150 [2023-12-24 14:17:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:17:39,641 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 382 transitions. [2023-12-24 14:17:39,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:17:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 382 transitions. [2023-12-24 14:17:39,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 14:17:39,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:17:39,642 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:17:39,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-24 14:17:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:17:39,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:17:39,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:17:39,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1658956632, now seen corresponding path program 1 times [2023-12-24 14:17:39,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:17:39,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204818986] [2023-12-24 14:17:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:17:39,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:17:39,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:17:39,845 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:17:39,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-24 14:17:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:17:40,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-24 14:17:40,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:17:40,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:17:40,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2023-12-24 14:17:41,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 41 [2023-12-24 14:17:41,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:41,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 69 [2023-12-24 14:17:41,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:41,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 58 [2023-12-24 14:17:43,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:43,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 70 [2023-12-24 14:17:43,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:43,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 48 [2023-12-24 14:17:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 414 proven. 120 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-24 14:17:44,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:17:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:17:44,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:17:44,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204818986] [2023-12-24 14:17:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204818986] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 14:17:44,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:17:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [27] total 30 [2023-12-24 14:17:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455249102] [2023-12-24 14:17:44,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:17:44,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:17:44,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:17:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:17:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2023-12-24 14:17:44,488 INFO L87 Difference]: Start difference. First operand 327 states and 382 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:17:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:17:44,946 INFO L93 Difference]: Finished difference Result 570 states and 672 transitions. [2023-12-24 14:17:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:17:44,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2023-12-24 14:17:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:17:44,951 INFO L225 Difference]: With dead ends: 570 [2023-12-24 14:17:44,951 INFO L226 Difference]: Without dead ends: 391 [2023-12-24 14:17:44,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2023-12-24 14:17:44,952 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 112 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:17:44,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 497 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:17:44,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-24 14:17:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 164. [2023-12-24 14:17:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 131 states have internal predecessors, (152), 19 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:17:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 190 transitions. [2023-12-24 14:17:45,002 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 190 transitions. Word has length 150 [2023-12-24 14:17:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:17:45,002 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 190 transitions. [2023-12-24 14:17:45,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:17:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 190 transitions. [2023-12-24 14:17:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:17:45,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:17:45,003 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:17:45,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-24 14:17:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:17:45,218 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:17:45,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:17:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1453407633, now seen corresponding path program 1 times [2023-12-24 14:17:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:17:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946615895] [2023-12-24 14:17:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:17:45,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:17:45,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:17:45,220 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:17:45,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 14:17:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:17:45,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 14:17:45,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:17:46,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:46,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 50 [2023-12-24 14:17:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:17:47,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:17:47,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:17:47,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946615895] [2023-12-24 14:17:47,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946615895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:17:47,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:17:47,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:17:47,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470522527] [2023-12-24 14:17:47,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:17:47,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:17:47,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:17:47,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:17:47,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 14:17:47,189 INFO L87 Difference]: Start difference. First operand 164 states and 190 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:17:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:17:51,152 INFO L93 Difference]: Finished difference Result 549 states and 659 transitions. [2023-12-24 14:17:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:17:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2023-12-24 14:17:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:17:51,155 INFO L225 Difference]: With dead ends: 549 [2023-12-24 14:17:51,155 INFO L226 Difference]: Without dead ends: 386 [2023-12-24 14:17:51,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:17:51,156 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 356 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:17:51,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 834 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-24 14:17:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-24 14:17:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 170. [2023-12-24 14:17:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 137 states have (on average 1.1532846715328466) internal successors, (158), 137 states have internal predecessors, (158), 19 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:17:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 196 transitions. [2023-12-24 14:17:51,206 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 196 transitions. Word has length 152 [2023-12-24 14:17:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:17:51,206 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 196 transitions. [2023-12-24 14:17:51,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:17:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 196 transitions. [2023-12-24 14:17:51,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:17:51,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:17:51,208 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:17:51,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-24 14:17:51,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:17:51,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:17:51,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:17:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2040213647, now seen corresponding path program 1 times [2023-12-24 14:17:51,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:17:51,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102180594] [2023-12-24 14:17:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:17:51,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:17:51,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:17:51,422 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:17:51,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-24 14:17:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:17:52,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 14:17:52,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:17:52,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2023-12-24 14:17:52,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:52,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 149 treesize of output 65 [2023-12-24 14:17:54,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:54,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 106 [2023-12-24 14:17:55,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:55,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 235 treesize of output 81 [2023-12-24 14:17:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-24 14:17:55,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:17:55,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:17:55,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102180594] [2023-12-24 14:17:55,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102180594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:17:55,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [760032017] [2023-12-24 14:17:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:17:55,722 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:17:55,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:17:55,724 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:17:55,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-24 14:17:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:17:57,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 14:17:57,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:17:57,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 14:17:58,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:17:58,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 79 [2023-12-24 14:18:04,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:18:04,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 94 treesize of output 82 [2023-12-24 14:18:05,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:18:05,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 245 treesize of output 113 [2023-12-24 14:18:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 56 proven. 240 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-24 14:18:05,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:18:05,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [760032017] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:18:05,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:18:05,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2023-12-24 14:18:05,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127894710] [2023-12-24 14:18:05,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:18:05,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 14:18:05,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:18:05,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 14:18:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=352, Unknown=1, NotChecked=0, Total=420 [2023-12-24 14:18:05,252 INFO L87 Difference]: Start difference. First operand 170 states and 196 transitions. Second operand has 18 states, 18 states have (on average 6.5) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2023-12-24 14:18:09,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:18:17,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:18:25,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:18:29,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:18:33,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:18:37,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:18:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:18:50,042 INFO L93 Difference]: Finished difference Result 599 states and 698 transitions. [2023-12-24 14:18:50,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 14:18:50,043 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) Word has length 152 [2023-12-24 14:18:50,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:18:50,044 INFO L225 Difference]: With dead ends: 599 [2023-12-24 14:18:50,044 INFO L226 Difference]: Without dead ends: 430 [2023-12-24 14:18:50,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=242, Invalid=943, Unknown=5, NotChecked=0, Total=1190 [2023-12-24 14:18:50,045 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 792 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 132 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:18:50,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1221 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 678 Invalid, 6 Unknown, 0 Unchecked, 27.4s Time] [2023-12-24 14:18:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-12-24 14:18:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 296. [2023-12-24 14:18:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 236 states have (on average 1.1271186440677967) internal successors, (266), 236 states have internal predecessors, (266), 34 states have call successors, (34), 25 states have call predecessors, (34), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 14:18:50,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 334 transitions. [2023-12-24 14:18:50,135 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 334 transitions. Word has length 152 [2023-12-24 14:18:50,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:18:50,135 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 334 transitions. [2023-12-24 14:18:50,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2023-12-24 14:18:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 334 transitions. [2023-12-24 14:18:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:18:50,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:18:50,137 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:18:50,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-12-24 14:18:50,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-24 14:18:50,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:18:50,549 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:18:50,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:18:50,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1152615921, now seen corresponding path program 1 times [2023-12-24 14:18:50,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:18:50,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915860081] [2023-12-24 14:18:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:18:50,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:18:50,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:18:50,551 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:18:50,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-24 14:18:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:18:51,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 14:18:51,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:18:52,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:18:52,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 51 [2023-12-24 14:18:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:18:53,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:18:53,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:18:53,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915860081] [2023-12-24 14:18:53,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915860081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:18:53,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:18:53,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:18:53,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758311779] [2023-12-24 14:18:53,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:18:53,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:18:53,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:18:53,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:18:53,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 14:18:53,500 INFO L87 Difference]: Start difference. First operand 296 states and 334 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:18:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:18:58,880 INFO L93 Difference]: Finished difference Result 882 states and 1030 transitions. [2023-12-24 14:18:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:18:58,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2023-12-24 14:18:58,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:18:58,884 INFO L225 Difference]: With dead ends: 882 [2023-12-24 14:18:58,884 INFO L226 Difference]: Without dead ends: 587 [2023-12-24 14:18:58,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:18:58,885 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 338 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:18:58,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1103 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 14:18:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-12-24 14:18:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 290. [2023-12-24 14:18:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 230 states have (on average 1.1304347826086956) internal successors, (260), 230 states have internal predecessors, (260), 34 states have call successors, (34), 25 states have call predecessors, (34), 25 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 14:18:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 328 transitions. [2023-12-24 14:18:58,967 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 328 transitions. Word has length 152 [2023-12-24 14:18:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:18:58,967 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 328 transitions. [2023-12-24 14:18:58,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:18:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 328 transitions. [2023-12-24 14:18:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:18:58,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:18:58,968 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:18:58,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-24 14:18:59,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:18:59,169 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:18:59,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:18:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1942370643, now seen corresponding path program 1 times [2023-12-24 14:18:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:18:59,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924935427] [2023-12-24 14:18:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:18:59,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:18:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:18:59,171 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:18:59,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-24 14:18:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:18:59,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 14:18:59,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:18:59,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 1 [2023-12-24 14:19:00,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:00,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 100 [2023-12-24 14:19:01,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:01,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 398 treesize of output 134 [2023-12-24 14:19:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-24 14:19:01,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:19:01,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:19:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924935427] [2023-12-24 14:19:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924935427] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:19:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1912103625] [2023-12-24 14:19:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:19:01,471 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:19:01,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:19:01,471 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:19:01,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-24 14:19:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:19:02,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 14:19:02,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:19:03,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 14:19:05,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:05,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 100 [2023-12-24 14:19:05,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:05,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 193 treesize of output 81 [2023-12-24 14:19:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-24 14:19:05,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:19:05,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1912103625] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:19:05,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:19:05,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-24 14:19:05,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187532263] [2023-12-24 14:19:05,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:19:05,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 14:19:05,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:19:05,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 14:19:05,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-12-24 14:19:05,993 INFO L87 Difference]: Start difference. First operand 290 states and 328 transitions. Second operand has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 4 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2023-12-24 14:19:09,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:19:09,881 INFO L93 Difference]: Finished difference Result 975 states and 1115 transitions. [2023-12-24 14:19:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 14:19:09,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 4 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) Word has length 152 [2023-12-24 14:19:09,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:19:09,883 INFO L225 Difference]: With dead ends: 975 [2023-12-24 14:19:09,884 INFO L226 Difference]: Without dead ends: 686 [2023-12-24 14:19:09,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 345 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=213, Invalid=843, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 14:19:09,885 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 504 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:19:09,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1512 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-24 14:19:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-24 14:19:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 639. [2023-12-24 14:19:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 514 states have (on average 1.140077821011673) internal successors, (586), 516 states have internal predecessors, (586), 72 states have call successors, (72), 52 states have call predecessors, (72), 52 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 14:19:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 730 transitions. [2023-12-24 14:19:10,090 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 730 transitions. Word has length 152 [2023-12-24 14:19:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:19:10,090 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 730 transitions. [2023-12-24 14:19:10,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 4 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 4 states have call predecessors, (38), 4 states have call successors, (38) [2023-12-24 14:19:10,090 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 730 transitions. [2023-12-24 14:19:10,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:19:10,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:19:10,092 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:19:10,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-12-24 14:19:10,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-24 14:19:10,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:10,504 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:19:10,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:19:10,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1765790639, now seen corresponding path program 1 times [2023-12-24 14:19:10,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:19:10,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530090038] [2023-12-24 14:19:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:19:10,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:10,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:19:10,506 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:19:10,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-24 14:19:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:19:10,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 14:19:10,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:19:11,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:11,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 33 [2023-12-24 14:19:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:19:11,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:19:11,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:19:11,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530090038] [2023-12-24 14:19:11,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530090038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:19:11,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:19:11,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:19:11,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206645548] [2023-12-24 14:19:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:19:11,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:19:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:19:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:19:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:19:11,589 INFO L87 Difference]: Start difference. First operand 639 states and 730 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:19:16,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:19:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:19:17,624 INFO L93 Difference]: Finished difference Result 1387 states and 1594 transitions. [2023-12-24 14:19:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:19:17,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2023-12-24 14:19:17,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:19:17,631 INFO L225 Difference]: With dead ends: 1387 [2023-12-24 14:19:17,631 INFO L226 Difference]: Without dead ends: 749 [2023-12-24 14:19:17,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:19:17,633 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 102 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:19:17,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 621 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2023-12-24 14:19:17,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-24 14:19:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 720. [2023-12-24 14:19:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 584 states have (on average 1.1523972602739727) internal successors, (673), 588 states have internal predecessors, (673), 79 states have call successors, (79), 56 states have call predecessors, (79), 56 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-24 14:19:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 831 transitions. [2023-12-24 14:19:17,846 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 831 transitions. Word has length 152 [2023-12-24 14:19:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:19:17,846 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 831 transitions. [2023-12-24 14:19:17,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:19:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 831 transitions. [2023-12-24 14:19:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:19:17,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:19:17,848 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:19:17,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-24 14:19:18,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:18,063 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:19:18,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:19:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1843123563, now seen corresponding path program 1 times [2023-12-24 14:19:18,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:19:18,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724813064] [2023-12-24 14:19:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:19:18,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:19:18,065 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:19:18,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-24 14:19:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:19:18,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:19:18,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:19:19,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:19,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 39 [2023-12-24 14:19:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:19:19,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:19:19,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:19:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724813064] [2023-12-24 14:19:19,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724813064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:19:19,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:19:19,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 14:19:19,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158870230] [2023-12-24 14:19:19,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:19:19,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 14:19:19,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:19:19,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 14:19:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:19:19,769 INFO L87 Difference]: Start difference. First operand 720 states and 831 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:19:23,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:19:23,083 INFO L93 Difference]: Finished difference Result 1675 states and 1945 transitions. [2023-12-24 14:19:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 14:19:23,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2023-12-24 14:19:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:19:23,089 INFO L225 Difference]: With dead ends: 1675 [2023-12-24 14:19:23,090 INFO L226 Difference]: Without dead ends: 956 [2023-12-24 14:19:23,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 14:19:23,092 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 231 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 14:19:23,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 589 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 14:19:23,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-24 14:19:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 732. [2023-12-24 14:19:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 596 states have (on average 1.1493288590604027) internal successors, (685), 600 states have internal predecessors, (685), 79 states have call successors, (79), 56 states have call predecessors, (79), 56 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-24 14:19:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 843 transitions. [2023-12-24 14:19:23,298 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 843 transitions. Word has length 152 [2023-12-24 14:19:23,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:19:23,299 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 843 transitions. [2023-12-24 14:19:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:19:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 843 transitions. [2023-12-24 14:19:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:19:23,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:19:23,300 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:19:23,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-24 14:19:23,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:23,516 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:19:23,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:19:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash 154179821, now seen corresponding path program 1 times [2023-12-24 14:19:23,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:19:23,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771682031] [2023-12-24 14:19:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:19:23,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:23,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:19:23,519 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:19:23,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-24 14:19:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:19:24,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 14:19:24,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:19:25,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:25,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 52 [2023-12-24 14:19:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:19:26,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:19:26,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:19:26,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771682031] [2023-12-24 14:19:26,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771682031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:19:26,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:19:26,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:19:26,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543138038] [2023-12-24 14:19:26,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:19:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:19:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:19:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:19:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 14:19:26,374 INFO L87 Difference]: Start difference. First operand 732 states and 843 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:19:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:19:31,162 INFO L93 Difference]: Finished difference Result 1834 states and 2141 transitions. [2023-12-24 14:19:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:19:31,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2023-12-24 14:19:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:19:31,168 INFO L225 Difference]: With dead ends: 1834 [2023-12-24 14:19:31,169 INFO L226 Difference]: Without dead ends: 1103 [2023-12-24 14:19:31,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:19:31,170 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 255 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 14:19:31,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1225 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 14:19:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2023-12-24 14:19:31,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 708. [2023-12-24 14:19:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 572 states have (on average 1.1486013986013985) internal successors, (657), 576 states have internal predecessors, (657), 79 states have call successors, (79), 56 states have call predecessors, (79), 56 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-24 14:19:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 815 transitions. [2023-12-24 14:19:31,415 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 815 transitions. Word has length 152 [2023-12-24 14:19:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:19:31,415 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 815 transitions. [2023-12-24 14:19:31,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:19:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 815 transitions. [2023-12-24 14:19:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:19:31,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:19:31,417 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:19:31,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-24 14:19:31,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:31,630 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:19:31,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:19:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash 630593967, now seen corresponding path program 1 times [2023-12-24 14:19:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:19:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360763038] [2023-12-24 14:19:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:19:31,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:31,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:19:31,632 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:19:31,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-24 14:19:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:19:31,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:19:31,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:19:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-24 14:19:31,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:19:31,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:19:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360763038] [2023-12-24 14:19:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360763038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:19:31,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:19:31,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:19:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530104515] [2023-12-24 14:19:31,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:19:31,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:19:31,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:19:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:19:31,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:19:31,978 INFO L87 Difference]: Start difference. First operand 708 states and 815 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:19:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:19:32,211 INFO L93 Difference]: Finished difference Result 1426 states and 1646 transitions. [2023-12-24 14:19:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:19:32,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2023-12-24 14:19:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:19:32,214 INFO L225 Difference]: With dead ends: 1426 [2023-12-24 14:19:32,214 INFO L226 Difference]: Without dead ends: 719 [2023-12-24 14:19:32,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:19:32,216 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 7 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:19:32,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 387 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:19:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-12-24 14:19:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 708. [2023-12-24 14:19:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 572 states have (on average 1.1433566433566433) internal successors, (654), 576 states have internal predecessors, (654), 79 states have call successors, (79), 56 states have call predecessors, (79), 56 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-24 14:19:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 812 transitions. [2023-12-24 14:19:32,456 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 812 transitions. Word has length 152 [2023-12-24 14:19:32,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:19:32,456 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 812 transitions. [2023-12-24 14:19:32,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:19:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 812 transitions. [2023-12-24 14:19:32,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 14:19:32,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:19:32,458 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:19:32,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-24 14:19:32,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:32,669 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:19:32,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:19:32,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1825095343, now seen corresponding path program 1 times [2023-12-24 14:19:32,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:19:32,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796418895] [2023-12-24 14:19:32,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:19:32,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:32,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:19:32,671 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:19:32,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-24 14:19:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:19:33,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 14:19:33,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:19:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-12-24 14:19:33,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:19:33,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:19:33,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796418895] [2023-12-24 14:19:33,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796418895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:19:33,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:19:33,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 14:19:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262237638] [2023-12-24 14:19:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:19:33,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 14:19:33,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:19:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 14:19:33,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 14:19:33,015 INFO L87 Difference]: Start difference. First operand 708 states and 812 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:19:33,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:19:33,258 INFO L93 Difference]: Finished difference Result 1429 states and 1645 transitions. [2023-12-24 14:19:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 14:19:33,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2023-12-24 14:19:33,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:19:33,262 INFO L225 Difference]: With dead ends: 1429 [2023-12-24 14:19:33,262 INFO L226 Difference]: Without dead ends: 722 [2023-12-24 14:19:33,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:19:33,264 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 7 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:19:33,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 387 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:19:33,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-12-24 14:19:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 708. [2023-12-24 14:19:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 572 states have (on average 1.1363636363636365) internal successors, (650), 576 states have internal predecessors, (650), 79 states have call successors, (79), 56 states have call predecessors, (79), 56 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-24 14:19:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 808 transitions. [2023-12-24 14:19:33,463 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 808 transitions. Word has length 152 [2023-12-24 14:19:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:19:33,463 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 808 transitions. [2023-12-24 14:19:33,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:19:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 808 transitions. [2023-12-24 14:19:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 14:19:33,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:19:33,465 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:19:33,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-12-24 14:19:33,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:33,674 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:19:33,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:19:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1869728653, now seen corresponding path program 1 times [2023-12-24 14:19:33,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:19:33,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777161129] [2023-12-24 14:19:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:19:33,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:19:33,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:19:33,676 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:19:33,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-24 14:19:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:19:34,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 14:19:34,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:19:34,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2023-12-24 14:19:39,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:39,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 208 treesize of output 106 [2023-12-24 14:19:39,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:39,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 371 treesize of output 149 [2023-12-24 14:19:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 319 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 14:19:40,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:19:40,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:19:40,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777161129] [2023-12-24 14:19:40,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777161129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:19:40,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [949129918] [2023-12-24 14:19:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:19:40,293 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:19:40,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:19:40,294 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:19:40,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-12-24 14:19:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:19:41,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 14:19:41,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:19:51,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 14:19:57,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:57,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 98 [2023-12-24 14:19:57,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:19:57,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 193 treesize of output 81 [2023-12-24 14:19:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 13 proven. 319 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 14:19:57,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:19:57,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [949129918] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:19:57,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:19:57,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-24 14:19:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137639098] [2023-12-24 14:19:57,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:19:57,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 14:19:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:19:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 14:19:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=642, Unknown=3, NotChecked=0, Total=756 [2023-12-24 14:19:57,818 INFO L87 Difference]: Start difference. First operand 708 states and 808 transitions. Second operand has 25 states, 23 states have (on average 5.391304347826087) internal successors, (124), 22 states have internal predecessors, (124), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 14:20:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:03,955 INFO L93 Difference]: Finished difference Result 1791 states and 2034 transitions. [2023-12-24 14:20:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 14:20:03,958 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.391304347826087) internal successors, (124), 22 states have internal predecessors, (124), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) Word has length 154 [2023-12-24 14:20:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:03,961 INFO L225 Difference]: With dead ends: 1791 [2023-12-24 14:20:03,961 INFO L226 Difference]: Without dead ends: 1084 [2023-12-24 14:20:03,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 341 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=458, Invalid=1891, Unknown=3, NotChecked=0, Total=2352 [2023-12-24 14:20:03,962 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 661 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:03,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1840 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 14:20:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2023-12-24 14:20:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 978. [2023-12-24 14:20:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 784 states have (on average 1.1262755102040816) internal successors, (883), 789 states have internal predecessors, (883), 112 states have call successors, (112), 81 states have call predecessors, (112), 81 states have return successors, (112), 107 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-24 14:20:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1107 transitions. [2023-12-24 14:20:04,252 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1107 transitions. Word has length 154 [2023-12-24 14:20:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:04,252 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1107 transitions. [2023-12-24 14:20:04,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.391304347826087) internal successors, (124), 22 states have internal predecessors, (124), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 14:20:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1107 transitions. [2023-12-24 14:20:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 14:20:04,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:04,255 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:04,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:04,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:04,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:20:04,669 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:04,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:04,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2092595505, now seen corresponding path program 1 times [2023-12-24 14:20:04,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:04,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21943911] [2023-12-24 14:20:04,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:04,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:04,670 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:04,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-24 14:20:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:04,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 14:20:04,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-12-24 14:20:05,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:20:05,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:05,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21943911] [2023-12-24 14:20:05,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21943911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:20:05,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:20:05,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:20:05,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307802552] [2023-12-24 14:20:05,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:05,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:20:05,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:05,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:20:05,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:20:05,032 INFO L87 Difference]: Start difference. First operand 978 states and 1107 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 14:20:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:05,393 INFO L93 Difference]: Finished difference Result 1653 states and 1864 transitions. [2023-12-24 14:20:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 14:20:05,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 154 [2023-12-24 14:20:05,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:05,396 INFO L225 Difference]: With dead ends: 1653 [2023-12-24 14:20:05,396 INFO L226 Difference]: Without dead ends: 658 [2023-12-24 14:20:05,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:20:05,398 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 7 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:05,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 496 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 14:20:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-12-24 14:20:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 635. [2023-12-24 14:20:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 507 states have (on average 1.1203155818540433) internal successors, (568), 509 states have internal predecessors, (568), 73 states have call successors, (73), 54 states have call predecessors, (73), 54 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 14:20:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 714 transitions. [2023-12-24 14:20:05,621 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 714 transitions. Word has length 154 [2023-12-24 14:20:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:05,621 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 714 transitions. [2023-12-24 14:20:05,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 14:20:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 714 transitions. [2023-12-24 14:20:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 14:20:05,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:05,623 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:05,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:05,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:05,834 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:05,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1949031242, now seen corresponding path program 1 times [2023-12-24 14:20:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:05,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711151855] [2023-12-24 14:20:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:05,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:05,836 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:05,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-24 14:20:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:06,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:20:06,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:06,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 14:20:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:20:06,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:20:06,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:06,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711151855] [2023-12-24 14:20:06,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711151855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:20:06,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:20:06,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:20:06,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000565346] [2023-12-24 14:20:06,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:06,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:20:06,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:20:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:20:06,304 INFO L87 Difference]: Start difference. First operand 635 states and 714 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:20:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:06,772 INFO L93 Difference]: Finished difference Result 1279 states and 1437 transitions. [2023-12-24 14:20:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:20:06,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 154 [2023-12-24 14:20:06,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:06,775 INFO L225 Difference]: With dead ends: 1279 [2023-12-24 14:20:06,775 INFO L226 Difference]: Without dead ends: 645 [2023-12-24 14:20:06,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:20:06,776 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 120 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:06,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 290 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:20:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-24 14:20:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 635. [2023-12-24 14:20:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 507 states have (on average 1.1143984220907297) internal successors, (565), 509 states have internal predecessors, (565), 73 states have call successors, (73), 54 states have call predecessors, (73), 54 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 14:20:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 711 transitions. [2023-12-24 14:20:06,942 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 711 transitions. Word has length 154 [2023-12-24 14:20:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:06,942 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 711 transitions. [2023-12-24 14:20:06,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:20:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 711 transitions. [2023-12-24 14:20:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 14:20:06,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:06,944 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:06,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:07,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:07,156 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:07,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1247966664, now seen corresponding path program 1 times [2023-12-24 14:20:07,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:07,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049447678] [2023-12-24 14:20:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:07,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:07,158 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:07,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-24 14:20:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:07,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 14:20:07,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:07,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-12-24 14:20:07,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-12-24 14:20:07,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2023-12-24 14:20:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:20:07,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:20:07,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049447678] [2023-12-24 14:20:07,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049447678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:20:07,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:20:07,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:20:07,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240414733] [2023-12-24 14:20:07,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:07,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 14:20:07,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:07,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 14:20:07,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-24 14:20:07,829 INFO L87 Difference]: Start difference. First operand 635 states and 711 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:20:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:08,651 INFO L93 Difference]: Finished difference Result 1539 states and 1700 transitions. [2023-12-24 14:20:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 14:20:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 154 [2023-12-24 14:20:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:08,654 INFO L225 Difference]: With dead ends: 1539 [2023-12-24 14:20:08,654 INFO L226 Difference]: Without dead ends: 905 [2023-12-24 14:20:08,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-24 14:20:08,655 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 166 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:08,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1042 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:20:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-24 14:20:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 633. [2023-12-24 14:20:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 505 states have (on average 1.108910891089109) internal successors, (560), 507 states have internal predecessors, (560), 73 states have call successors, (73), 54 states have call predecessors, (73), 54 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 14:20:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 706 transitions. [2023-12-24 14:20:08,883 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 706 transitions. Word has length 154 [2023-12-24 14:20:08,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:08,883 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 706 transitions. [2023-12-24 14:20:08,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:20:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 706 transitions. [2023-12-24 14:20:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 14:20:08,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:08,885 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:08,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-12-24 14:20:09,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:09,093 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:09,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:09,093 INFO L85 PathProgramCache]: Analyzing trace with hash -719932307, now seen corresponding path program 1 times [2023-12-24 14:20:09,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:09,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187992040] [2023-12-24 14:20:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:09,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:09,095 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:09,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 14:20:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:09,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 14:20:09,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2023-12-24 14:20:09,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:20:09,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:09,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187992040] [2023-12-24 14:20:09,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187992040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:20:09,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:20:09,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 14:20:09,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903537498] [2023-12-24 14:20:09,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:20:09,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 14:20:09,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 14:20:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 14:20:09,471 INFO L87 Difference]: Start difference. First operand 633 states and 706 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 14:20:09,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:20:09,854 INFO L93 Difference]: Finished difference Result 1291 states and 1440 transitions. [2023-12-24 14:20:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 14:20:09,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 154 [2023-12-24 14:20:09,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:20:09,857 INFO L225 Difference]: With dead ends: 1291 [2023-12-24 14:20:09,857 INFO L226 Difference]: Without dead ends: 653 [2023-12-24 14:20:09,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 14:20:09,859 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 7 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:20:09,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 483 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-24 14:20:09,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-12-24 14:20:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 633. [2023-12-24 14:20:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 505 states have (on average 1.102970297029703) internal successors, (557), 507 states have internal predecessors, (557), 73 states have call successors, (73), 54 states have call predecessors, (73), 54 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 14:20:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 703 transitions. [2023-12-24 14:20:10,047 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 703 transitions. Word has length 154 [2023-12-24 14:20:10,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:20:10,047 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 703 transitions. [2023-12-24 14:20:10,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-24 14:20:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 703 transitions. [2023-12-24 14:20:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 14:20:10,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:20:10,049 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:20:10,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-24 14:20:10,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:10,260 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:20:10,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:20:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash -13335701, now seen corresponding path program 1 times [2023-12-24 14:20:10,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:20:10,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691840040] [2023-12-24 14:20:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:10,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:20:10,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:20:10,262 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:20:10,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-24 14:20:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:11,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 14:20:11,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:11,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:20:11,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:20:11,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 65 [2023-12-24 14:20:15,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:20:15,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 180 treesize of output 109 [2023-12-24 14:20:15,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:20:15,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 376 treesize of output 136 [2023-12-24 14:20:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 282 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-24 14:20:15,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:20:15,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:20:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691840040] [2023-12-24 14:20:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691840040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:20:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1465382808] [2023-12-24 14:20:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:20:15,872 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:20:15,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:20:15,877 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:20:15,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-12-24 14:20:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:20:17,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 14:20:17,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:20:17,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 14:20:27,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:20:27,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 69 [2023-12-24 14:20:35,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:20:35,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 115 [2023-12-24 14:20:43,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:20:43,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 237 treesize of output 109 [2023-12-24 14:20:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 14 proven. 282 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-24 14:20:43,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:20:43,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1465382808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:20:43,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:20:43,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2023-12-24 14:20:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719518628] [2023-12-24 14:20:43,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:20:43,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 14:20:43,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:20:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 14:20:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=687, Unknown=7, NotChecked=0, Total=812 [2023-12-24 14:20:43,411 INFO L87 Difference]: Start difference. First operand 633 states and 703 transitions. Second operand has 26 states, 24 states have (on average 5.166666666666667) internal successors, (124), 21 states have internal predecessors, (124), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 14:20:48,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:20:52,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:21:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:10,655 INFO L93 Difference]: Finished difference Result 1413 states and 1578 transitions. [2023-12-24 14:21:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 14:21:10,656 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.166666666666667) internal successors, (124), 21 states have internal predecessors, (124), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) Word has length 154 [2023-12-24 14:21:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:10,658 INFO L225 Difference]: With dead ends: 1413 [2023-12-24 14:21:10,658 INFO L226 Difference]: Without dead ends: 781 [2023-12-24 14:21:10,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=469, Invalid=1971, Unknown=10, NotChecked=0, Total=2450 [2023-12-24 14:21:10,659 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 610 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 79 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:10,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1384 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 992 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2023-12-24 14:21:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-24 14:21:10,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 183. [2023-12-24 14:21:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 149 states have (on average 1.1073825503355705) internal successors, (165), 149 states have internal predecessors, (165), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 203 transitions. [2023-12-24 14:21:10,719 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 203 transitions. Word has length 154 [2023-12-24 14:21:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:10,719 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 203 transitions. [2023-12-24 14:21:10,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.166666666666667) internal successors, (124), 21 states have internal predecessors, (124), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 14:21:10,719 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 203 transitions. [2023-12-24 14:21:10,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 14:21:10,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:10,720 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:10,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:10,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:11,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:11,129 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:11,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1248849734, now seen corresponding path program 1 times [2023-12-24 14:21:11,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:11,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416306705] [2023-12-24 14:21:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:11,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:11,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:11,131 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:11,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-24 14:21:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:11,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:21:11,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:11,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:21:11,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:11,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2023-12-24 14:21:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 204 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 14:21:11,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 14:21:12,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:12,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416306705] [2023-12-24 14:21:12,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416306705] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:21:12,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:21:12,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-24 14:21:12,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845504694] [2023-12-24 14:21:12,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:21:12,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 14:21:12,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:12,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 14:21:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:21:12,280 INFO L87 Difference]: Start difference. First operand 183 states and 203 transitions. Second operand has 14 states, 12 states have (on average 7.75) internal successors, (93), 14 states have internal predecessors, (93), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:21:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:13,193 INFO L93 Difference]: Finished difference Result 371 states and 411 transitions. [2023-12-24 14:21:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 14:21:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.75) internal successors, (93), 14 states have internal predecessors, (93), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) Word has length 156 [2023-12-24 14:21:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:13,196 INFO L225 Difference]: With dead ends: 371 [2023-12-24 14:21:13,196 INFO L226 Difference]: Without dead ends: 189 [2023-12-24 14:21:13,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 297 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2023-12-24 14:21:13,198 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 136 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:13,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 583 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 14:21:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-24 14:21:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2023-12-24 14:21:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 149 states have (on average 1.1006711409395973) internal successors, (164), 149 states have internal predecessors, (164), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 202 transitions. [2023-12-24 14:21:13,276 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 202 transitions. Word has length 156 [2023-12-24 14:21:13,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:13,277 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 202 transitions. [2023-12-24 14:21:13,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.75) internal successors, (93), 14 states have internal predecessors, (93), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:21:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 202 transitions. [2023-12-24 14:21:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:21:13,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:13,277 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:13,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-12-24 14:21:13,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:13,478 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:13,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:13,478 INFO L85 PathProgramCache]: Analyzing trace with hash 838183681, now seen corresponding path program 1 times [2023-12-24 14:21:13,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:13,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014488612] [2023-12-24 14:21:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:13,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:13,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:13,480 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:13,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-24 14:21:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:13,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 14:21:13,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:13,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-12-24 14:21:14,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 14:21:14,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:14,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 38 [2023-12-24 14:21:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:14,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:14,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:14,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014488612] [2023-12-24 14:21:14,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014488612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:14,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:14,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 14:21:14,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70531865] [2023-12-24 14:21:14,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:14,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 14:21:14,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:14,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 14:21:14,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-24 14:21:14,480 INFO L87 Difference]: Start difference. First operand 183 states and 202 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:19,702 INFO L93 Difference]: Finished difference Result 532 states and 596 transitions. [2023-12-24 14:21:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-24 14:21:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2023-12-24 14:21:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:19,704 INFO L225 Difference]: With dead ends: 532 [2023-12-24 14:21:19,704 INFO L226 Difference]: Without dead ends: 350 [2023-12-24 14:21:19,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-12-24 14:21:19,704 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 266 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:19,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1415 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 14:21:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-24 14:21:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 202. [2023-12-24 14:21:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 168 states have (on average 1.0952380952380953) internal successors, (184), 168 states have internal predecessors, (184), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 222 transitions. [2023-12-24 14:21:19,773 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 222 transitions. Word has length 158 [2023-12-24 14:21:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:19,774 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 222 transitions. [2023-12-24 14:21:19,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 222 transitions. [2023-12-24 14:21:19,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:21:19,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:19,774 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:19,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:19,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:19,975 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:19,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash 445156671, now seen corresponding path program 1 times [2023-12-24 14:21:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583840032] [2023-12-24 14:21:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:19,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:19,977 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:19,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-24 14:21:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:20,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:21:20,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:20,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 14:21:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:20,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:20,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583840032] [2023-12-24 14:21:20,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583840032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:20,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:20,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:21:20,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662724811] [2023-12-24 14:21:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:20,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:21:20,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:21:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:21:20,480 INFO L87 Difference]: Start difference. First operand 202 states and 222 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:20,962 INFO L93 Difference]: Finished difference Result 497 states and 552 transitions. [2023-12-24 14:21:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 14:21:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2023-12-24 14:21:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:20,964 INFO L225 Difference]: With dead ends: 497 [2023-12-24 14:21:20,964 INFO L226 Difference]: Without dead ends: 296 [2023-12-24 14:21:20,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:21:20,965 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 86 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:20,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 421 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:21:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-24 14:21:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 223. [2023-12-24 14:21:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 189 states have (on average 1.0793650793650793) internal successors, (204), 189 states have internal predecessors, (204), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 242 transitions. [2023-12-24 14:21:21,023 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 242 transitions. Word has length 158 [2023-12-24 14:21:21,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:21,024 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 242 transitions. [2023-12-24 14:21:21,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 242 transitions. [2023-12-24 14:21:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:21:21,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:21,024 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:21,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:21,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:21,226 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:21,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:21,227 INFO L85 PathProgramCache]: Analyzing trace with hash 978732291, now seen corresponding path program 1 times [2023-12-24 14:21:21,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:21,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290707250] [2023-12-24 14:21:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:21,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:21,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:21,228 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:21,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-24 14:21:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:21,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:21:21,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:21,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-24 14:21:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:21,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:21,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290707250] [2023-12-24 14:21:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290707250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:21,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:21,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 14:21:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240262307] [2023-12-24 14:21:21,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:21,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:21:21,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:21,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:21:21,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 14:21:21,710 INFO L87 Difference]: Start difference. First operand 223 states and 242 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:22,110 INFO L93 Difference]: Finished difference Result 505 states and 553 transitions. [2023-12-24 14:21:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:21:22,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2023-12-24 14:21:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:22,111 INFO L225 Difference]: With dead ends: 505 [2023-12-24 14:21:22,111 INFO L226 Difference]: Without dead ends: 283 [2023-12-24 14:21:22,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 14:21:22,112 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 75 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:22,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 564 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:21:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-24 14:21:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 223. [2023-12-24 14:21:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 189 states have (on average 1.0740740740740742) internal successors, (203), 189 states have internal predecessors, (203), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 241 transitions. [2023-12-24 14:21:22,193 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 241 transitions. Word has length 158 [2023-12-24 14:21:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:22,193 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 241 transitions. [2023-12-24 14:21:22,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 241 transitions. [2023-12-24 14:21:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:21:22,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:22,194 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:22,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:22,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:22,407 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:22,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash 585705281, now seen corresponding path program 1 times [2023-12-24 14:21:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:22,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338427150] [2023-12-24 14:21:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:22,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:22,410 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:22,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-24 14:21:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:22,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 14:21:22,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:22,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-24 14:21:22,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-24 14:21:22,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2023-12-24 14:21:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:23,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:23,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:23,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338427150] [2023-12-24 14:21:23,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338427150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:23,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:23,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 14:21:23,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314736790] [2023-12-24 14:21:23,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:23,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:21:23,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:23,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:21:23,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:21:23,069 INFO L87 Difference]: Start difference. First operand 223 states and 241 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:23,671 INFO L93 Difference]: Finished difference Result 515 states and 561 transitions. [2023-12-24 14:21:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:21:23,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2023-12-24 14:21:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:23,673 INFO L225 Difference]: With dead ends: 515 [2023-12-24 14:21:23,673 INFO L226 Difference]: Without dead ends: 293 [2023-12-24 14:21:23,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-24 14:21:23,677 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 108 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:23,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1239 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 14:21:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-24 14:21:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 223. [2023-12-24 14:21:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 189 states have (on average 1.0740740740740742) internal successors, (203), 189 states have internal predecessors, (203), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 241 transitions. [2023-12-24 14:21:23,750 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 241 transitions. Word has length 158 [2023-12-24 14:21:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:23,750 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 241 transitions. [2023-12-24 14:21:23,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:23,750 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 241 transitions. [2023-12-24 14:21:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 14:21:23,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:23,751 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:23,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:23,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:23,951 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:23,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash 300631357, now seen corresponding path program 1 times [2023-12-24 14:21:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201520493] [2023-12-24 14:21:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:23,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:23,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:23,954 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:23,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-24 14:21:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:24,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 14:21:24,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:24,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-12-24 14:21:24,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-12-24 14:21:24,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:24,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 28 [2023-12-24 14:21:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:24,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:24,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:24,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201520493] [2023-12-24 14:21:24,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201520493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:24,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:21:24,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 14:21:24,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731197645] [2023-12-24 14:21:24,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:24,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:21:24,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:24,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:21:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:21:24,685 INFO L87 Difference]: Start difference. First operand 223 states and 241 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:25,558 INFO L93 Difference]: Finished difference Result 501 states and 546 transitions. [2023-12-24 14:21:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 14:21:25,559 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 158 [2023-12-24 14:21:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:25,560 INFO L225 Difference]: With dead ends: 501 [2023-12-24 14:21:25,560 INFO L226 Difference]: Without dead ends: 279 [2023-12-24 14:21:25,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-12-24 14:21:25,561 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 126 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:25,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1137 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:21:25,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-24 14:21:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 205. [2023-12-24 14:21:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 171 states have (on average 1.0760233918128654) internal successors, (184), 171 states have internal predecessors, (184), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 222 transitions. [2023-12-24 14:21:25,617 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 222 transitions. Word has length 158 [2023-12-24 14:21:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:25,617 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 222 transitions. [2023-12-24 14:21:25,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 222 transitions. [2023-12-24 14:21:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 14:21:25,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:25,617 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:25,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:25,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:25,818 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:25,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash -526929560, now seen corresponding path program 1 times [2023-12-24 14:21:25,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:25,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734914944] [2023-12-24 14:21:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:25,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:25,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:25,820 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:25,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-24 14:21:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:27,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 14:21:27,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:27,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:21:27,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 14:21:27,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:21:27,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:27,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-12-24 14:21:27,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:27,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-12-24 14:21:27,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:21:28,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:28,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 52 [2023-12-24 14:21:28,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2023-12-24 14:21:28,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:28,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2023-12-24 14:21:28,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:28,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 22 [2023-12-24 14:21:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 537 proven. 33 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-24 14:21:29,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:32,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:32,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734914944] [2023-12-24 14:21:32,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734914944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:21:32,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [280070090] [2023-12-24 14:21:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:32,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:32,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:21:32,613 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:21:32,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2023-12-24 14:21:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:34,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 14:21:34,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:34,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-24 14:21:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:34,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:34,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [280070090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:34,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:21:34,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2023-12-24 14:21:34,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865862703] [2023-12-24 14:21:34,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:34,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 14:21:34,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:34,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 14:21:34,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2023-12-24 14:21:34,533 INFO L87 Difference]: Start difference. First operand 205 states and 222 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:34,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:34,970 INFO L93 Difference]: Finished difference Result 467 states and 510 transitions. [2023-12-24 14:21:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 14:21:34,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 160 [2023-12-24 14:21:34,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:34,971 INFO L225 Difference]: With dead ends: 467 [2023-12-24 14:21:34,971 INFO L226 Difference]: Without dead ends: 263 [2023-12-24 14:21:34,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2023-12-24 14:21:34,972 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 61 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:34,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 415 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-24 14:21:34,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-24 14:21:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 210. [2023-12-24 14:21:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 176 states have (on average 1.0738636363636365) internal successors, (189), 176 states have internal predecessors, (189), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 227 transitions. [2023-12-24 14:21:35,036 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 227 transitions. Word has length 160 [2023-12-24 14:21:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:35,036 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 227 transitions. [2023-12-24 14:21:35,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 227 transitions. [2023-12-24 14:21:35,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 14:21:35,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:35,037 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:35,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:35,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:35,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:35,438 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:35,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1654463912, now seen corresponding path program 1 times [2023-12-24 14:21:35,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:35,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477740742] [2023-12-24 14:21:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:35,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:35,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:35,440 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:35,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-24 14:21:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:36,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 14:21:36,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:36,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:21:36,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:21:36,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:36,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-12-24 14:21:36,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:36,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2023-12-24 14:21:36,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:36,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 52 [2023-12-24 14:21:37,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:21:37,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:37,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 52 [2023-12-24 14:21:37,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2023-12-24 14:21:38,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:38,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2023-12-24 14:21:38,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:38,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 22 [2023-12-24 14:21:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 511 proven. 33 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-12-24 14:21:38,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:41,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:41,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477740742] [2023-12-24 14:21:41,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477740742] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:21:41,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1866320901] [2023-12-24 14:21:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:41,658 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:21:41,659 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:21:41,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2023-12-24 14:21:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:43,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 14:21:43,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:43,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:21:44,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:21:44,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:44,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 46 [2023-12-24 14:21:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-24 14:21:44,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:21:44,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1866320901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:21:44,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 14:21:44,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 23 [2023-12-24 14:21:44,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251047060] [2023-12-24 14:21:44,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:21:44,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:21:44,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:44,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:21:44,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2023-12-24 14:21:44,925 INFO L87 Difference]: Start difference. First operand 210 states and 227 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:21:45,864 INFO L93 Difference]: Finished difference Result 424 states and 459 transitions. [2023-12-24 14:21:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:21:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 160 [2023-12-24 14:21:45,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:21:45,864 INFO L225 Difference]: With dead ends: 424 [2023-12-24 14:21:45,864 INFO L226 Difference]: Without dead ends: 215 [2023-12-24 14:21:45,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 14:21:45,865 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 68 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:21:45,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 675 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:21:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-24 14:21:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2023-12-24 14:21:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 179 states have (on average 1.0726256983240223) internal successors, (192), 179 states have internal predecessors, (192), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:21:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 230 transitions. [2023-12-24 14:21:45,923 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 230 transitions. Word has length 160 [2023-12-24 14:21:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:21:45,923 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 230 transitions. [2023-12-24 14:21:45,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-24 14:21:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 230 transitions. [2023-12-24 14:21:45,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 14:21:45,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:21:45,924 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:21:45,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:46,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2023-12-24 14:21:46,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:46,334 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:21:46,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:21:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1654523494, now seen corresponding path program 1 times [2023-12-24 14:21:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:21:46,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987032770] [2023-12-24 14:21:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:21:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:21:46,335 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:21:46,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-24 14:21:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:47,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 14:21:47,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:47,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:21:47,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:21:47,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:47,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-12-24 14:21:47,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:47,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-24 14:21:47,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:47,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-24 14:21:47,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:21:48,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:48,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-24 14:21:48,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2023-12-24 14:21:48,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:48,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2023-12-24 14:21:48,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:48,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 18 [2023-12-24 14:21:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 461 proven. 33 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-24 14:21:48,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:52,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:21:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987032770] [2023-12-24 14:21:52,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987032770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:21:52,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1277590796] [2023-12-24 14:21:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:21:52,588 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:21:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:21:52,589 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:21:52,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2023-12-24 14:21:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:21:54,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 14:21:54,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:21:54,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-12-24 14:21:55,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:55,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2023-12-24 14:21:55,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:55,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 32 [2023-12-24 14:21:55,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:55,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 14:21:56,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:56,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 14:21:56,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:56,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-12-24 14:21:56,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:21:56,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2023-12-24 14:21:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 107 proven. 369 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 14:21:56,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:21:59,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1277590796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:21:59,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:21:59,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2023-12-24 14:21:59,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382458143] [2023-12-24 14:21:59,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:21:59,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 14:21:59,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:21:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 14:21:59,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2023-12-24 14:21:59,760 INFO L87 Difference]: Start difference. First operand 213 states and 230 transitions. Second operand has 23 states, 20 states have (on average 7.85) internal successors, (157), 22 states have internal predecessors, (157), 11 states have call successors, (38), 9 states have call predecessors, (38), 11 states have return successors, (38), 9 states have call predecessors, (38), 11 states have call successors, (38) [2023-12-24 14:22:03,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:10,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:22:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:22:11,899 INFO L93 Difference]: Finished difference Result 690 states and 747 transitions. [2023-12-24 14:22:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-24 14:22:11,900 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 7.85) internal successors, (157), 22 states have internal predecessors, (157), 11 states have call successors, (38), 9 states have call predecessors, (38), 11 states have return successors, (38), 9 states have call predecessors, (38), 11 states have call successors, (38) Word has length 160 [2023-12-24 14:22:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:22:11,902 INFO L225 Difference]: With dead ends: 690 [2023-12-24 14:22:11,902 INFO L226 Difference]: Without dead ends: 478 [2023-12-24 14:22:11,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 376 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=855, Invalid=3305, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 14:22:11,903 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 416 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-24 14:22:11,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 611 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-24 14:22:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-24 14:22:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 205. [2023-12-24 14:22:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 171 states have (on average 1.0701754385964912) internal successors, (183), 171 states have internal predecessors, (183), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:22:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 221 transitions. [2023-12-24 14:22:11,972 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 221 transitions. Word has length 160 [2023-12-24 14:22:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:22:11,972 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 221 transitions. [2023-12-24 14:22:11,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 7.85) internal successors, (157), 22 states have internal predecessors, (157), 11 states have call successors, (38), 9 states have call predecessors, (38), 11 states have return successors, (38), 9 states have call predecessors, (38), 11 states have call successors, (38) [2023-12-24 14:22:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 221 transitions. [2023-12-24 14:22:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 14:22:11,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:22:11,973 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:22:11,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2023-12-24 14:22:12,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-12-24 14:22:12,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:12,374 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:22:12,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:22:12,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2052579506, now seen corresponding path program 1 times [2023-12-24 14:22:12,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:22:12,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756878606] [2023-12-24 14:22:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:22:12,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:12,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:22:12,376 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:22:12,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-12-24 14:22:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:22:14,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 14:22:14,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:22:14,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:22:14,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2023-12-24 14:22:14,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 14:22:14,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 56 [2023-12-24 14:22:14,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2023-12-24 14:22:14,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:22:14,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 37 [2023-12-24 14:22:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 204 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 14:22:14,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:22:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 14:22:14,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:22:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756878606] [2023-12-24 14:22:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756878606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:22:14,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:22:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-12-24 14:22:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033797951] [2023-12-24 14:22:14,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:22:14,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 14:22:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:22:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 14:22:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-24 14:22:14,898 INFO L87 Difference]: Start difference. First operand 205 states and 221 transitions. Second operand has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:22:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:22:15,589 INFO L93 Difference]: Finished difference Result 415 states and 447 transitions. [2023-12-24 14:22:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 14:22:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) Word has length 162 [2023-12-24 14:22:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:22:15,591 INFO L225 Difference]: With dead ends: 415 [2023-12-24 14:22:15,591 INFO L226 Difference]: Without dead ends: 211 [2023-12-24 14:22:15,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-12-24 14:22:15,592 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 120 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 14:22:15,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 429 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 14:22:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-24 14:22:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2023-12-24 14:22:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 171 states have (on average 1.064327485380117) internal successors, (182), 171 states have internal predecessors, (182), 19 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-24 14:22:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 220 transitions. [2023-12-24 14:22:15,680 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 220 transitions. Word has length 162 [2023-12-24 14:22:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:22:15,680 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 220 transitions. [2023-12-24 14:22:15,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:22:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 220 transitions. [2023-12-24 14:22:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 14:22:15,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:22:15,681 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:22:15,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-12-24 14:22:15,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:15,897 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:22:15,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:22:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1433041164, now seen corresponding path program 1 times [2023-12-24 14:22:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:22:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381236362] [2023-12-24 14:22:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:22:15,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:15,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:22:15,899 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:22:15,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-12-24 14:22:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:22:17,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 14:22:17,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:22:17,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:22:20,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:22:20,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 59 [2023-12-24 14:22:21,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:22:37,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 185 [2023-12-24 14:22:37,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:22:37,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 297 treesize of output 117 [2023-12-24 14:22:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-24 14:22:38,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 14:22:38,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:22:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381236362] [2023-12-24 14:22:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381236362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 14:22:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 14:22:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 14:22:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574757326] [2023-12-24 14:22:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 14:22:38,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 14:22:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:22:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 14:22:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-24 14:22:38,318 INFO L87 Difference]: Start difference. First operand 205 states and 220 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:22:54,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 14:22:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:22:55,607 INFO L93 Difference]: Finished difference Result 411 states and 440 transitions. [2023-12-24 14:22:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 14:22:55,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2023-12-24 14:22:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:22:55,621 INFO L225 Difference]: With dead ends: 411 [2023-12-24 14:22:55,621 INFO L226 Difference]: Without dead ends: 409 [2023-12-24 14:22:55,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-24 14:22:55,622 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 167 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:22:55,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 741 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-12-24 14:22:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-24 14:22:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 369. [2023-12-24 14:22:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 310 states have (on average 1.0548387096774194) internal successors, (327), 310 states have internal predecessors, (327), 33 states have call successors, (33), 25 states have call predecessors, (33), 25 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-24 14:22:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 393 transitions. [2023-12-24 14:22:55,729 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 393 transitions. Word has length 162 [2023-12-24 14:22:55,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:22:55,729 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 393 transitions. [2023-12-24 14:22:55,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-24 14:22:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 393 transitions. [2023-12-24 14:22:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 14:22:55,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:22:55,731 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:22:55,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2023-12-24 14:22:55,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:55,931 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:22:55,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:22:55,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1433100746, now seen corresponding path program 1 times [2023-12-24 14:22:55,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:22:55,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946974148] [2023-12-24 14:22:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:22:55,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:55,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:22:55,933 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:22:55,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-12-24 14:22:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:22:56,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 14:22:56,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:22:56,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2023-12-24 14:22:56,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:22:56,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2023-12-24 14:22:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 204 proven. 45 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-24 14:22:56,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:22:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-24 14:22:57,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:22:57,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946974148] [2023-12-24 14:22:57,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946974148] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 14:22:57,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:22:57,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2023-12-24 14:22:57,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39463749] [2023-12-24 14:22:57,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:22:57,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 14:22:57,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:22:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 14:22:57,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-24 14:22:57,299 INFO L87 Difference]: Start difference. First operand 369 states and 393 transitions. Second operand has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 20 states have internal predecessors, (109), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:22:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 14:22:58,813 INFO L93 Difference]: Finished difference Result 745 states and 793 transitions. [2023-12-24 14:22:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 14:22:58,814 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 20 states have internal predecessors, (109), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) Word has length 162 [2023-12-24 14:22:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 14:22:58,815 INFO L225 Difference]: With dead ends: 745 [2023-12-24 14:22:58,815 INFO L226 Difference]: Without dead ends: 377 [2023-12-24 14:22:58,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 303 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 14:22:58,817 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 163 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 14:22:58,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 990 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 14:22:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-24 14:22:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2023-12-24 14:22:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 310 states have (on average 1.0483870967741935) internal successors, (325), 310 states have internal predecessors, (325), 33 states have call successors, (33), 25 states have call predecessors, (33), 25 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-24 14:22:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 391 transitions. [2023-12-24 14:22:58,952 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 391 transitions. Word has length 162 [2023-12-24 14:22:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 14:22:58,952 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 391 transitions. [2023-12-24 14:22:58,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 20 states have internal predecessors, (109), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 14:22:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 391 transitions. [2023-12-24 14:22:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-24 14:22:58,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 14:22:58,954 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:22:58,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2023-12-24 14:22:59,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:59,156 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 14:22:59,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 14:22:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1984108718, now seen corresponding path program 1 times [2023-12-24 14:22:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 14:22:59,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33690220] [2023-12-24 14:22:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:22:59,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:22:59,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 14:22:59,158 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 14:22:59,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-12-24 14:23:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:23:00,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 14:23:00,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:23:00,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 14:23:03,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:23:03,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 67 [2023-12-24 14:23:06,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:23:26,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 185 [2023-12-24 14:23:26,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:23:26,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 305 treesize of output 119 [2023-12-24 14:23:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 293 proven. 39 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 14:23:27,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:23:39,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 14:23:39,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33690220] [2023-12-24 14:23:39,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33690220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:23:39,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [454680710] [2023-12-24 14:23:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 14:23:39,410 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 14:23:39,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 14:23:39,411 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 14:23:39,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2023-12-24 14:23:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 14:23:41,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 14:23:41,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 14:23:42,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2023-12-24 14:23:58,329 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:23:58,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 77 [2023-12-24 14:24:03,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 14:24:44,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 149 [2023-12-24 14:24:44,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 14:24:44,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2023-12-24 14:24:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 293 proven. 39 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 14:24:45,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 14:25:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [454680710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 14:25:02,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 14:25:02,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 25 [2023-12-24 14:25:02,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707805017] [2023-12-24 14:25:02,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 14:25:02,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 14:25:02,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 14:25:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 14:25:02,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=804, Unknown=4, NotChecked=0, Total=992 [2023-12-24 14:25:02,985 INFO L87 Difference]: Start difference. First operand 369 states and 391 transitions. Second operand has 26 states, 24 states have (on average 6.375) internal successors, (153), 23 states have internal predecessors, (153), 6 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 4 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-24 14:25:12,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:25:16,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:25:27,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:25:30,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:25:33,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:25:37,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:25:40,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:25:43,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:25:57,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:01,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:23,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:27,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:30,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:34,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:37,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:41,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:44,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:48,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:52,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:26:56,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:00,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:04,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:08,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:12,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:17,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:21,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:25,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:29,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:33,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:37,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:41,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:45,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:49,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:53,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:27:58,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:28:02,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:28:06,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:28:10,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:28:14,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:28:18,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:28:22,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] Received shutdown request... [2023-12-24 14:28:26,725 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:28:26,739 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:28:26,739 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 14:28:26,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 14:28:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 14:28:26,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 377 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 84.1s TimeCoverageRelationStatistics Valid=303, Invalid=1243, Unknown=14, NotChecked=0, Total=1560 [2023-12-24 14:28:26,789 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 92 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 47 mSolverCounterUnsat, 42 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 42 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.3s IncrementalHoareTripleChecker+Time [2023-12-24 14:28:26,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 368 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 550 Invalid, 42 Unknown, 0 Unchecked, 164.3s Time] [2023-12-24 14:28:26,790 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 14:28:26,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2023-12-24 14:28:27,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2023-12-24 14:28:27,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 14:28:27,193 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (369states) and FLOYD_HOARE automaton (currently 17 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (118 states constructed, input type IntersectNwa). [2023-12-24 14:28:27,200 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 14:28:27,203 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 14:28:27,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 02:28:27 BoogieIcfgContainer [2023-12-24 14:28:27,207 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 14:28:27,207 INFO L158 Benchmark]: Toolchain (without parser) took 849862.67ms. Allocated memory was 298.8MB in the beginning and 416.3MB in the end (delta: 117.4MB). Free memory was 240.8MB in the beginning and 159.2MB in the end (delta: 81.6MB). Peak memory consumption was 199.4MB. Max. memory is 8.0GB. [2023-12-24 14:28:27,207 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 186.6MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 14:28:27,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.86ms. Allocated memory is still 298.8MB. Free memory was 240.8MB in the beginning and 224.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 14:28:27,207 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.07ms. Allocated memory is still 298.8MB. Free memory was 224.0MB in the beginning and 220.6MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 14:28:27,207 INFO L158 Benchmark]: Boogie Preprocessor took 77.09ms. Allocated memory is still 298.8MB. Free memory was 220.2MB in the beginning and 214.3MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-24 14:28:27,207 INFO L158 Benchmark]: RCFGBuilder took 1066.61ms. Allocated memory is still 298.8MB. Free memory was 214.3MB in the beginning and 225.6MB in the end (delta: -11.4MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2023-12-24 14:28:27,208 INFO L158 Benchmark]: TraceAbstraction took 848334.90ms. Allocated memory was 298.8MB in the beginning and 416.3MB in the end (delta: 117.4MB). Free memory was 225.1MB in the beginning and 159.2MB in the end (delta: 65.9MB). Peak memory consumption was 183.4MB. Max. memory is 8.0GB. [2023-12-24 14:28:27,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 186.6MB. Free memory is still 137.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 312.86ms. Allocated memory is still 298.8MB. Free memory was 240.8MB in the beginning and 224.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.07ms. Allocated memory is still 298.8MB. Free memory was 224.0MB in the beginning and 220.6MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 77.09ms. Allocated memory is still 298.8MB. Free memory was 220.2MB in the beginning and 214.3MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1066.61ms. Allocated memory is still 298.8MB. Free memory was 214.3MB in the beginning and 225.6MB in the end (delta: -11.4MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * TraceAbstraction took 848334.90ms. Allocated memory was 298.8MB in the beginning and 416.3MB in the end (delta: 117.4MB). Free memory was 225.1MB in the beginning and 159.2MB in the end (delta: 65.9MB). Peak memory consumption was 183.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (369states) and FLOYD_HOARE automaton (currently 17 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (118 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.3s, OverallIterations: 41, TraceHistogramMax: 19, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 451.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 mSolverCounterUnknown, 12671 SdHoareTripleChecker+Valid, 310.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12556 mSDsluCounter, 36996 SdHoareTripleChecker+Invalid, 303.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31312 mSDsCounter, 1811 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18802 IncrementalHoareTripleChecker+Invalid, 20664 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1811 mSolverCounterUnsat, 5684 mSDtfsCounter, 18802 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10950 GetRequests, 9734 SyntacticMatches, 33 SemanticMatches, 1183 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22314 ImplicationChecksByTransitivity, 305.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=978occurred in iteration=23, InterpolantAutomatonStates: 749, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 40 MinimizatonAttempts, 5253 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.9s SsaConstructionTime, 34.0s SatisfiabilityAnalysisTime, 338.6s InterpolantComputationTime, 8000 NumberOfCodeBlocks, 8000 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 9609 ConstructedInterpolants, 2334 QuantifiedInterpolants, 262785 SizeOfPredicates, 633 NumberOfNonLiveVariables, 17915 ConjunctsInSsa, 1079 ConjunctsInUnsatCore, 63 InterpolantComputations, 26 PerfectInterpolantSequences, 37973/43092 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown